About the Online Resources
Learn to Program with Scratch includes many useful online resources, which you can download at the links below.
As you read, open the Scratch scripts (.sb2 files) mentioned in each chapter to follow along with the examples. Whenever you solve a practice problem or Try It Out exercise, you can check your answers with the files in the Solutions folder. Learn even more about Scratch by reading the information about the Paint Editor, mathematical functions, and drawing geometric shapes in the Extra Resources folder. If you want to try out more guided examples, you’ll even find extra games and simulations to go along with several chapters in the Bonus Applications folder.
Open your browser and go to the Scratch website. If you have an account, click "Sign In" and enter your credentials to log on. (That will let you save your work, but you can still use Scratch even without an account!)
Click "Create" to open the Scratch programming environment. From there, click "File" followed by "Upload from your computer." Go to the folder where you extracted the contents of the Chapter_Scripts.zip file, and select the script you'd like to open. When asked, "Replace contents of the current project?" click OK.
You should now be able to edit your Scratch project!